TLC5930PWPR

Overview

The TLC5930PWPR is a 12-channel constant-current sink LED driver manufactured by Texas Instruments, housed in a 24-pin HTSSOP package. It supports adjustable output current up to 40 mA per channel and provides 1024-step grayscale dimming via pulse width modulation. The device utilizes a linear shift register for data input and includes an internal clock for PWM generation. Operating voltage ranges from 3.0 V to 5.5 V, with a maximum power dissipation of 1.6 W.

Feature Summary

• Provides 12 independent constant-current sink channels for precise LED brightness control
• Supports 1024-level grayscale display through internal pulse width modulation
• Integrates a linear shift register for serial data input and storage
• Features internal clock generation eliminating the need for external timing components

Applications

• LED matrix displays requiring multi-channel grayscale control
• Backlighting systems for portable electronic devices
• General-purpose LED indicator arrays
• RGB LED color mixing applications

Procurement Notes

Verify the specific suffix 'PWPR' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the HTSSOP-24 package dimensions align with the target PCB footprint. Ensure the component meets RoHS compliance standards if applicable to the end product regulations. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate authenticity and revision status before procurement.

Selection Notes

Select this component when a high channel count with individual current control is necessary without external resistors for each channel. Consider the thermal performance capabilities given the 1.6 W power dissipation limit in the specified package. Evaluate the interface requirements to ensure compatibility with the system's microcontroller or shift register logic levels. Verify that the 1024-step grayscale resolution meets the visual quality requirements of the application.

Part Context

The TLC5930 belongs to Texas Instruments' family of LED drivers designed for high-density lighting applications. It simplifies design by integrating current regulation and PWM control into a single IC. Compared to discrete solutions, it reduces board space and component count. The PWPR variant specifically denotes the reel packaging suitable for surface-mount technology lines.

Replacement Considerations

Check for direct pin-compatible alternatives within the same TI portfolio if supply constraints exist. Verify that any substitute maintains the 12-channel configuration and 40 mA output capability. Ensure the replacement device supports the same 1024-step grayscale resolution and HTSSOP-24 package form factor.